Messages in this thread | | | Subject | 2.4.20 and 6to4 tunneling | From | "Trever L. Adams" <> | Date | 25 Mar 2003 13:02:20 -0500 |
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I have found a problem, I am not sure if it is in my configuration or not. I have no dedicated ipv6 addresses, however, my internal network and the router are using 6to4 tunneling and uses the appropriate 2002: addresses. I am doing this to learn about ipv6 and possibly to develop some software using ipv6.
The problem is that a website I set up on a friend's box in Finland (which has a 2001 ipv6 address and doesn't use ipv6) loads the text just fine. However, I never do get the images, and if I do a netstat on the server (in Finland), the connection shows open, with a sendq of about the image file sizes.
This sounds like the old mtu problems where path mtu discovery was broken. However, I am unable to find much information. Is this a bug in the kernel, in the setup, or just me being silly?
vichu-ip6.innernet.org is the website, remove the -ip6 to get the ipv4 site. Yes, it is a silly little website of me playing around. The image that definitely shows the problem is right at the top of the page.
I can provide ifconfig output or any other details necessary. I have tried to do ethereal analysis of the connection. I don't seem to see anything but the opening syn/syn of the connection carrying the image. It just seems the other end is broken. The server is running RedHat 8 all errata, kernel 2.4.18-24.8.0. Mine is a largely RedHat Phoebe with a few packages from the newer rawhide.
Sorry if this is off topic, but I don't seem to be finding any references to such problems w/ Google, so I thought it might be a kernel bug, but am not quite positive of that yet.
Trever -- "In protocol design, perfection has been reached not when there is nothing left to add, but when there is nothing left to take away." -- RFC1925: The Twelve Networking Truths
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